Mauricio conducted an experiment in which he drew marbles out of a bag and recorded the color. The results of the experiment are shown in the table below. What is the probability that Mauricio drew a yellow marble?

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since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.